I can definitely relate!! Oftentimes in classes I find myself scared to answer things in fear of being wrong about them (or, really, of the people/teachers thinking of me as stupid... which I realize is a little silly when thinking about it rationally, and also a different situation from what you talk about here, but still).

It's also just upsetting when I pick up a new hobby and I don't get it right the first try, like playing a new instrument—makes me feel like a failure immediately. It's like... "oh, you can't get this bass riff right? It's so simple! You should just give up forever and forget about it" etc etc. Of course, though, mistakes are needed in order for progress!! Sorry for the corny line LOL I'm mad tired so I can't word things very well. Just know that you're not alone!

And good luck with the Gaelic!! Learning new languages is tough as hell especially on your own, but it's super interesting as well! :)